[PATCH v1 for-6.1 00/11] target/arm: Implement BFloat16

[Richard Henderson]

Based-on: 20210416210240.1591291-1-richard.henderson@linaro.org
("[PATCH v5 for-6.1 00/81] target/arm: Implement SVE2")

https://gitlab.com/rth7680/qemu/-/tree/tgt-arm-bf16
https://gitlab.com/rth7680/qemu/-/commit/2ecc372b672d11fdc4e2573d789bfb3f5e6cba48

Bfloat16 is a set of 2 tightly-coupled features adding to AArch32 NEON,
AArch64 AdvSIMD, and AArch64 SVE1.  That said, there are helper functions
and decode patterns in the SVE2 patch set that help here, so I've based
this patchset on that.

Tested against FVP 11.13.36 via RISU.


r~


Richard Henderson (11):
  target/arm: Add isar_feature_{aa32,aa64,aa64_sve}_bf16
  target/arm: Unify unallocated path in disas_fp_1src
  target/arm: Implement scalar float32 to bfloat16 conversion
  target/arm: Implement vector float32 to bfloat16 conversion
  fpu: Add float_round_to_odd_inf
  target/arm: Implement bfloat16 dot product (vector)
  target/arm: Implement bfloat16 dot product (indexed)
  target/arm: Implement bfloat16 matrix multiply accumulate
  target/arm: Implement bfloat widening fma (vector)
  target/arm: Implement bfloat widening fma (indexed)
  target/arm: Enable BFloat16 extensions

 include/fpu/softfloat-types.h   |   4 +-
 target/arm/cpu.h                |  15 ++++
 target/arm/helper-sve.h         |   4 +
 target/arm/helper.h             |  15 ++++
 target/arm/neon-dp.decode       |   1 +
 target/arm/neon-shared.decode   |  11 +++
 target/arm/sve.decode           |  19 ++++-
 target/arm/vfp.decode           |   2 +
 fpu/softfloat.c                 |   8 +-
 target/arm/cpu64.c              |   3 +
 target/arm/cpu_tcg.c            |   1 +
 target/arm/sve_helper.c         |   2 +
 target/arm/translate-a64.c      | 142 +++++++++++++++++++++++++++-----
 target/arm/translate-sve.c      | 112 +++++++++++++++++++++++++
 target/arm/vec_helper.c         | 138 +++++++++++++++++++++++++++++++
 target/arm/vfp_helper.c         |  12 +++
 target/arm/translate-neon.c.inc |  91 ++++++++++++++++++++
 target/arm/translate-vfp.c.inc  |  24 ++++++
 18 files changed, 580 insertions(+), 24 deletions(-)

-- 
2.25.1